Sheps4her-
Where in NC are you? I am west of Asheville- nice to know there are more Dellie people in my state!
I am not sure if that is a pure Del or not - the comb is larger than I have seen on a Del hen so far in my experience, and the hackle and tail markings are not totally correct, but she could be a cross.
If you want to see pictures of good markings, and some of the description from the Standard of Perfection, you could check with the Delaware Poultry club site - you can't get in all the areas without being a member, but you should be able to see the Schilling Illustrations, which were taken from life, and are considered about the best out there.
The hackle feather should be irregularly barred, and on the females, the main tail feathers should be black with white edging. You girl has too much of a Columbian look in the hackles. How old is she? Sometimes they will grow in better tail feathers after a first molt, but I am not sure the hackle markings will change.